.app-container {
    width: 80%;
}

.img-style {
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: 100%;
}

.img404 {
    display: flex;
    align-items: center;
}

.box {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
}